Check out some of the surplus barcode scanners- they might have what you
need. Check surplus stores in your area. Some of the nicest toys are there.
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip
Chip suggested a barcode scanner, but I don't know of any that are 2K
pixels. Even standard fax scanners are less than this; at 200 dpi a 8.5"
sensor is 1700 pixels. You're going to need the sensor bar from a
large-format fax or page scanner to get the pixel density you need.
Surplus is your best bet--maybe even the thrift stores. Sometimes you
get lucky and the driver chip is readily hackable. Find the OEM of the
sensor, and you can then get datasheets.
As a side note, today's image scanners are often fairly basic -- just a
USB interface to a small driver board, connected to the scanner bar and
fluorescent light source. One option is to hack this module complete, if
you can dig into the software driver. I haven't done this myself, but it
might be an option to consider.
Robots for Less at Budget Robotics: http://www.budgetrobotics.com/
Author: Robot Builder's Sourcebook & Robot Builder's Bonanza
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